Motor for self-playing organs.



No. 737,180. PATENTED AUG. 25, 1903.

G. WARREN.

MOTOR FOR SELF PLAYING ORGANS.. APPLICATION FILED MAY 10. 1901.

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4o levers.

UNITED STATES- Patented August 25, 1902.

PATENT OFFICE.

' CHARLES WAR EN, OF GUELPH, OANADA, AssIcNO ro THE BELL ORGAN AND PIANOOOMPANY, LIMITED,

CORPORATION.

F GUELPI-I, ONTARIO, CANADA, A

MOTOR FOR SELF-PLAYING ORGANS.

SPECIFICATION forming part of Letters Patent No. 737,180, dated August25, 1903. Application filed May 10,1901. Serial No. 59,674. (No model-JTo all whom it may concern:

Be it known that I, CHARLES WARREN, m usical-instrument expert, of thecity of Guelph, in the county of Wellington, in the Province 5 ofOntario, Canada, have invented certain new and useful Improvements inMotors for.

Self-Playing Organs, of which the following is a specification.

My invention relates to that class of pneu- Io matic organs which may be.played either.

from the ordinary keyboard or automatically by means of a tracker-boardand perforated music-sheet; and the object ofthe invention is tosimplify, cheapen, and make the con- I 5 strnction of such instrumentmore compact,

avoidthe liability of its being affected by cl i-- vmatic changes, andthe consequent liabilityically playing in which the valves will not beliable to be influenced'by climatic changes.

In order that the invention may be fully understood, I will describe thesame by reference to the accompanying drawings, in

which Figure 1 is a general perspective view of the exterior of myorgan, showing the casing broken away to exhibit generally the partsinvolved in my invention. Fig. 2 is a side elevation attached to arewinding mechanism. Fig. 3 is an inverted plan of the pneumatics andshowing their relation to the key- Fig. 4 is asectional side elevationof an arrangement for operating the exhaustfeeders. x

In carrying out my invention I employ a vacuum-chamber a, extendinglongitudinally and communicating with the tracker-board b by tubes 0,communicating alternately with diaphragms d in the front and back wallsof the vacuum-chamber valves 6, covering openin gs e,connectingthechamber a with the outer air, being adapted to be operated by thediaphragms din the usual well-known manner.

The vacuum-chamber is provided with pneumatics f on its underside placedend to end in two rows, one row being somewhat in advance of the other,so that the end of a pneumatic inone' row is opposite the ends of twoating mechanism of the ordinary type and are provided with a jumper-railf above their pivots f to prevent'them being lifted at this'point whenoperated. by the pneumatics f.

I shall now describe the mechanism of the motor whereby the music-rollis driven, so as tocoact with the tracker-board, and whereby also thesaidroll is rewound.

A is the trunk, leading from the exhaustchamber B to above the plate 0,upon the bottom of which the pneumatics 1, 2, and 3 are connected. Thetrunk A, as will be seen, extends upwardly and communicates with thecasing A which is supported at the rear end of the plate C. Thepartition A, substantially L-shaped in cross section, extends throughthecasing A ,dividing it into two portions and forming one of the seats forthe double-acting valves D. Each doubleacting valve D has a valve-rod D,which at'the up per end extends through a nut or buttonD The valve-rodsD extend at the top through ahole'E and at the bottom through a hole E,the hole E being designed to admit the air and the hole E communicatingwith the vacuum and exhaust chamber B. The valve-rod D is supported atthe top and bottom in suitable guiding-fingers D It will be seen thatthere are three pneumatics, corresponding to the number of the valves,and their connections to such valves are as follows: Each pneumatic hassecured on the bottom thereof the bars 1, 2, and 3, which are connectedby the connecting-bars 1 2 and 3* to the cranks 4, 4: and 4 of themotorspindle 4:. These cranks are of course differently set in relationto each other, as indicated, and the motorspindle 4 is journaled insuitable bearingso.

6, 7, and 8 are levers pivoted on the bearing-brackets 9 and having oneend extending underneath the cams 6, 7 and 8. The other ends havespring-fingers 10, which extend under the nuts or buttons D on thevalve-rod D, such spring-fingers having a limited vertical play.

I shall now describe the means whereby a continuous regular motion isimparted to the motor-spindle.

When the double-acting valve D is lifted by its cam 7 and the lever 7,the corresponding pneumatic is collapsed and motion is imparted to thecrank 43. Upon the cam 7 releasing the lever 7 the corresponding valve Dreturns to its normal position, and the air is admitted through theopening E. As there are three pneumatics, a constant exhaust or vacuumis acting, for the reason that the other cranks are operated inrotation, thus insuring a complete and continuous revolution. Of courseI may dispense with one of the pneumatics and its correspondingmechanism; but I prefer the three to obtain the best results.

The valve N serves to create a vacuum in the motor when the openingwhich it covers is open or to render the motor inoperative when thevalve is closed and the instrument played manually. This valve N isconnected by the rod N to an upright N which in turn is connected by thelink N to the crank-rod N which extends into a slotted block N connectedto the stop N.

It will be understood that j indicates the exhaust-feeder, and j thepneumatic, operated in one direction by spring y and in the otherdirection by straps v, connected by rods to to the pedal 00, this beinga simple and convenient form of operating mechanism.

What I claim as my invention is 1. The combination with the motorpneumatics and spindle and suitable valves for the pneumatics, of theexhaust-chamber and the trunk communicating with the valves of thepneumatics a cross-wall in the trunk having anopening therein, and asuitable valve for closing said opening, a rod connected to the valveand provided with suitable connecting-links at the outside of the trunk,a stop provided with a slotted block and a crank-rod suitably journaledand having one end extending through the slot in the block on the stopand the other end pivotally connected to the link as and for the purposespecified.

2. The combination with the motor-spindle and the driving connectionfrom the same to the music-winding drum and the rewindingroller, of thevacuum-chamber and the crosscasing and a plurality of pneumaticssituated beneath such casing, an L-shaped cross-wall extending from endto end of such casing, an opening in the horizontal portion of suchcross-wall and an opening directly above the same in the top of thecasing communicating with the atmosphere and a single valve with adouble seat situated between the opening in the Wall and the openingabove it leading to the air, suitable guideways on the bottom Wall ofthe casing and in the opening in the top wall, the button on the upperend of the rod, thelever pivotally secured and provided with an endspring-finger at one end through which the rod extends and the cam ofthe motor-spindle resting on and coacting with the outside end of thelevers as specified.

CHARLES WARREN.

Witnesses:

B. BOYD, L. TRIMBLE.

